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DAC-HF12BMC Scheda tecnica(PDF) 3 Page - Murata Power Solutions Inc. |
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DAC-HF12BMC Scheda tecnica(HTML) 3 Page - Murata Power Solutions Inc. |
3 / 4 page DAC-HF Series ® ® CALIBRATION PROCEDURE Unipolar Output Current 1. Connect the converter as shown in Figure 2. 2. Set all inputs low and adjust the ZERO ADJUST potentiometer for a reading of 0V at the output. 3. Set all inputs high and adjust the GAIN ADJUST potentiometer for a reading of –F.S. + 1LSB (See Table 1). Bipolar Output Current 1. Connect the converter as shown in Figure 3. 2. Set all inputs low and adjust the OFFSET ADJUST and LOAD potentiometer for an output reading of +F.S. (See Table 2). 3. Set all inputs high and adjust the GAIN ADJUST potentiom- eter for an output reading of –F.S. + 1LSB (See Table 2). 1µF + + BIT 1 OUTPUT I +15V BIT 12 12 1 24 DAC-HF 23 22 20 21 16 15 14 13 19 17 18 OUT 0.1µF –15V 1µF 0.1µF 100 W OFFSET ADJUST 100 W GAIN ADJUST LOAD (444 W NOMINAL) (FOR 0 TO ±0.5V FS) 200 W 370 W Figure 3. Bipolar Current Output Connections 2k Ω FEEDBACK (10V RANGE) BIPOLAR OFFSET 23 20 21 19 4k = 0.1% 18 400 Ω, ±10% REF OUT (–10V = 2%) 4k Ω FEEDBACK (20V RANGE) OUTPUT GROUND 2k 2k 5mA 17 Figure 4. Equivalent Output Circuit ANALOG OUTPUT 0 to –10V F.S. 0 to –5V F.S. 0 to 1V F.S. INPUT CODING STRAIGHT BINARY UNIPOLAR SCALE –F.S. + 1LSB 1111 1111 1111 +0.9998V –4.9988V –9.9976V –3/4F.S. 1100 0000 0000 +0.7500V –3.7500V –7.5000V –1/2F.S. 1000 0000 0000 +0.5000V –2.5000V –5.0000V –1/4F.S. 0100 0000 0000 +2.5000V –1.2500V –2.5000V –1LSB 0000 0000 0001 +0.0002V –0.0012V –0.0024V 0 0000 0000 0000 0.0000V 0.0000V 0.0000V Table 2. 12-Bit Bipolar Output Coding ANALOG OUTPUT INPUT CODING OFFSET BINARY BIPOLAR SCALE –F.S. + 1LSB 1111 1111 1111 +0.4998V –2.4988V –4.9976V –9.9951V –1/2F.S. 1100 0000 0000 +0.1250V –1.2500V –2.5000V –5.0000V –1LSB 1000 0000 0001 +0.0002V –0.0012V –0.0024V –0.0049V 0 1000 0000 0000 0.0000V 0.0000V 0.0000V 0.0000V +1/2F.S. 0100 0000 0000 –0.1250V +1.2500V +2.5000V +5.0000V +F.S. – 1LSB 0000 0000 0001 –0.4998V +2.4988V +4.9976V +9.9951V +F.S. 0000 0000 0000 –0.5000V +2.5000V +5.0000V +10.0000V ±10V F.S. ±5V F.S. ±2.5V F.S. ±0.5V F.S. Table 3. Programmable Output Range Pin Connections OUTPUT VOLTAGE RANGE FEEDBACK CONNECTIONS CONNECT THESE PINS TOGETHER 0 to –5V PIN 19 PIN 17 to PIN 18 / PIN 20 to PIN 23 0 to –10V PIN 19 PIN 20 to PIN 23 ±2.5V PIN 19 PIN 17 to PIN 18 / PIN 20 to PIN 18 ±5V PIN 19 PIN 20 to PIN 18 ±10V PIN 17 PIN 20 to PIN 18 In all programmable output ranges, pin 18 connects to external operational amplifier inverting input. Table 1. 12-Bit Unipolar Output Coding Figure 2. Unipolar Current Output Connections 1µF + 100 W 2M W + BIT 1 OUTPUT I +15V GAIN ADJUST BIT 12 12 1 24 DAC-HF 23 22 20 21 16 15 14 13 19 17 18 OUT 0.1µF –15V 1µF 0.1µF ZERO ADJUST 25k W –15V +15V 400 W LOAD (FOR 0 TO +1V FS) 50nsec/DIV DAC-HF with AM-500, ±5V output full scale (10V) step 50nsec/DIV Figure 5. Voltage Output Waveforms |
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